Biomedical and Behavioral Outcomes of 2GETHER: A Randomized Controlled Trial of a Telehealth HIV Prevention Program for Young Male Couples

Objective: This study evaluated the efficacy of the 2GETHER relationship education and HIV prevention program for young male couples in reducing risk for HIV. Method: We conducted a comparative effectiveness randomized controlled trial of 2GETHER, a five-session hybrid group- and couple-based intervention delivered via videoconference, relative to a single-session HIV testing and risk reduction counseling protocol delivered to couples. We randomized 200 young male couples (N = 400) to 2GETHER or control from 2018 to 2020. Primary biomedical (i.e., rectal Chlamydia and Gonorrhea infection) and behavioral outcomes (i.e., condomless anal sex [CAS]) were measured at 12-months postintervention. Secondary outcomes were other HIV prevention and risk behaviors, relationship quality, and substance use. Multilevel regression was used to model intervention outcomes to account for clustering within couples. Postintervention change over time was modeled as a latent linear growth curve at the within-persons level. Results: We observed significant intervention effects on primary biomedical and behavioral HIV risk outcomes. Participants in 2GETHER had significantly lower odds of rectal STIs at 12-months relative to control. We also observed significantly steeper declines in the number of CAS partners and acts from baseline to 12-month follow-up in 2GETHER relative to control. Few differences were observed for secondary relationship and HIV-related outcomes. Conclusions: 2GETHER is an efficacious intervention that has a significant impact on both biomedical and behavioral HIV prevention outcomes among male couples. Couple-based HIV prevention programs enhanced with evidence-based relationship education may effectively reduce the most proximal predictors of HIV infection.